The WorldFish Center is implementing the FtF Aquaculture Project in 20 southern districts in Bangladesh. The project is implemented under USAID’s Feed the Future initiative in collaboration with the Government of Bangladesh.
Due to inadequate technical knowledge and training in advanced methods of gradually growing carp poly culture, framers are not getting expected yield. From the very beginning of the CSISA-BD project, WoldFish Center has taken initiative to introduce advanced methods in carp poly culture. To do this, the shortage of skilled trainers and training materials, has, particularly, been realized. Presently, a number of manuals on carp poly culture from Department of Fisheries, Bangladesh Fisheries Research Institute, WorldFish Center and different GOs and NGOs are available.
The introduction of Tilapia rendalli in Lake Sauce is described,outlining the various biological investigations which were necessaryfor management of the lake and biomass estimation, age determinationand overcrowding.
The current status of tilapia culture in Sudan is examined, describing the pond culture system used. Future prospects are also examined. It is believed that great effort is required before fish farming can boost food supply inthe country.
The current study was designed to optimize the dietary levels of Spirulina platensis in Oreochromis niloticus; this was tested via graded levels. Six isonitrogenous and isocaloric rations containing graded levels of dried spirulina 0, 5, 7.5, 10, 15 and 20 g/kg diet were fed separately to six equal groups of O. niloticus fingerlings for 3 months. Growth performance, non-specific immune parameters, tissue reactions and resistance of tilapias post challenge infection with Pseudomonas fluorescens were estimated monthly.
A brief account is given of project activities conducted regarding promotion of rice-cum-fish culture in Surin Province,Thailand as a means of increasing protein consumption and also income for rural people. The effect of stocking rate and stocking size on production was investigated. Three fish species were used: Cyprinus carpio, Puntius gonionotus and Oreochromis niloticus . It is believed that further research is warranted regarding rice-fish systems in which wild and cultured species can co-exist.
The Abbassa selection line (developed by selective breeding) and the Kafr El Sheikh commercial strain (widely used in Egypt), both Oreochromis niloticus, were compared at two stocking densities (two and four fish m-2). Harvest weight, length, depth, width and head length were recorded. The Abbassa line showed a superior harvest weight (28 per cent) over the Kafr El Sheikh strain. Males were heavier than females, but the between-sex difference was greater in the commercial than in the Abbassa line (39 and 31 per cent respectively).
Tilapia farming has great potential in Bangladesh. Tilapia promises to become a primary cultured species for freshwater and brackish water ecosystems, and therefore may also be a major source of employment. Bangladesh could become one of the leading Asian countries for tilapia seed production and grow-out farming. This article looks at the current status of Tilapia farming and seed production in Bangladesh.
Econometric techniques were used to estimate a production function for tilapia pond culture in El-Fayum Governorate, Egypt, utilizing cross-sectional field data. Explanatory variables were feed, initial stocking weight, and pond size. The function was used to examine returns to scale, estimate the productivity of feed and initial stocking weight, and estimate the profit maximizing demand equations for feed and fingerlings. Diminishing returns to scale seem to exist for tilapia pond culture.
Polyculture of tilapias (Oreo¬chromis niloticus and 0. mossambicus/O. niloticus hybrid) with shrimp (Penaeus orientalis) has been investigated several times in China since 1981. The results have caused much debate. Oppositionists held that finfish, especially tilapias, would rapidly consume the shrimp postlarvae and juveniles as happened when shrimp were put together with tilapias in a small tank. This article gave an overview of this practice in China.